The following are true about spectral sensitivity of the retina:
a. in scotopic conditions, the peak sensitivity of the eye is near 500 nm
b. under photopic conditions the peak sensitivity is near 555 nm
c. in the presence of a bright yellow steady background light the retina has a peak sensitivity near 440
nm to a 25-Hz stimulus
d. all above
a. in scotopic conditions, the peak sensitivity of the eye is near 500 nm
b. under photopic conditions the peak sensitivity is near 555 nm
c. in the presence of a bright yellow steady background light the retina has a peak sensitivity near 440
nm to a 25-Hz stimulus
d. all above